Dictionary
at•mol•y•sis
Pronunciation: (at-mol'u-sis), [key]—
n.,
—pl. -sesPronunciation: (-sēz"). [key]
a process for separating gases or vapors of different molecular weights by transmission through a porous substance.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.